Carcinoid Tumors of Appendix Presenting as Acute Appendicitis

Background: We aim to present the data of patients who underwent appendectomy due to acute appendicitis and incidental carcinoid tumor was detected on pathology.Methods: Retrospective analysis of the patient charts between January 1999 and September 2018 were performed. Results: 2778 appendectomy was performed due to acute appendicitis. Appendiceal carcinoid tumor was detected in 12 (0.43%) patients. Eight patients were (66.7%) female. Median age 37.5 years (range: 21- 60). The median tumor size was 0.7 cm (range: 0.1-2.5). No perforation was detected. Eleven patients underwent appendectomy and one patient had right hemicolectomy. The median follow-up period was 41.5 months (range: 22-49). There were no recurrences.Conclusion: Appendix carcinoid tumors are quite rare, usually asymptomatic and diagnosed incidentally on histopathological examination after appendectomy. The treatment of appendix carcionid tumors is directly related with the tumor size, localization, presence of lymphovascular and mesoapendix invasion, mitotic activation rate and level of Ki67. So, it is important to follow the histopathological results after appendectomy.